Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1200993 > unrolled thread
| Started by | Peter Zijlstra <peterz@infradead.org> |
|---|---|
| First post | 2015-08-05 19:10 +0200 |
| Last post | 2015-08-05 19:10 +0200 |
| Articles | 1 — 1 participant |
Back to article view | Back to linux.kernel
This discussion starts older than the indexed window; earlier articles aren't shown. The article labeled Started by
below is the oldest one visible, not the original post.
Re: [PATCH RFC v1 0/4] perf: Introduce extended syscall error reporting Peter Zijlstra <peterz@infradead.org> - 2015-08-05 19:10 +0200
| From | Peter Zijlstra <peterz@infradead.org> |
|---|---|
| Date | 2015-08-05 19:10 +0200 |
| Subject | Re: [PATCH RFC v1 0/4] perf: Introduce extended syscall error reporting |
| Message-ID | <pUamu-7Eq-3@gated-at.bofh.it> |
On Fri, Jul 24, 2015 at 02:45:55PM +0300, Alexander Shishkin wrote: > Hi Peter and Ingo and everybody, > > Here's my second stab at improving perf's error reporting by attaching > arbitrary strings to the integer error codes. This is largely based > off of the previous email thread [1]. > > This time around, I employed a linker trick to convert the structures > containing extended error information into integers, which are then > made to look just like normal error codes so that IS_ERR_VALUE() and > friends would still work correctly on them. So no extra pointers in > the struct perf_event or anywhere else; the extended error codes are > passed around like normal error codes. They only need to be converted > in syscalls' topmost return statements. This is done in 1/4. > > Then, 2/4 illustrates how error sites can be extended to include more > information such as file names and line numbers [1]. > > The other two patches add perf_err() annotation to a few semi-randomly > picked places in perf core (3/4) and x86 bits (4/4). Looks generally ok to me. Thanks for doing this. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Back to top | Article view | linux.kernel
csiph-web